8005520617 has 2 divisors, whose sum is σ = 8005520618. Its totient is φ = 8005520616.

The previous prime is 8005520597. The next prime is 8005520639. The reversal of 8005520617 is 7160255008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7576657936 + 428862681 = 87044^2 + 20709^2 .

It is a cyclic number.

It is not a de Polignac number, because 8005520617 - 2⁷ = 8005520489 is a prime.

It is not a weakly prime, because it can be changed into another prime (8005520317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4002760308 + 4002760309.

It is an arithmetic number, because the mean of its divisors is an integer number (4002760309).

Almost surely, 2^8005520617 is an apocalyptic number.

It is an amenable number.

8005520617 is a deficient number, since it is larger than the sum of its proper divisors (1).

8005520617 is an equidigital number, since it uses as much as digits as its factorization.

8005520617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 8005520617 is about 89473.5749649023. The cubic root of 8005520617 is about 2000.4599456336.

The spelling of 8005520617 in words is "eight billion, five million, five hundred twenty thousand, six hundred seventeen".